Pump-cylinder.



WITNESSES M. S. PARSONS. PUMP vCYLINDER.

APPLICATION FILED MARJI. 1918.

Patented Oct. 15, 1918 z P W N3 3;

A TTORIVEVS MARION s. reasons, or rerun, rarssooar.

PUMP-CYLINDER.

Specification of Letters Patent. Pajbgntceqil (lot, 115, 13915.

Application filed March 11, 1918. Serial No. aerate.

To all whom it may concern:

Be it known that l, MARION S. PARsoN-s, a citizen of the United States, residing at Joplin, in the county of Jasper and State of Missouri, have invented a new and useful Pump-Cylinder, of which the following is a specification.

The device forming the subject matter of this application is a pump of that general type in which a pair of oppositely moving pistons work'in a barrel, the packings being fixed with respect to the barrel, and one object of the invention is to provide a novel which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit-of the invention.

in the accompanying drawings Figure 1 shows in longitudinal section, a

device constructed in accordance with the' present invention, parts appearing in elevation;

Fig. 2 is a cross section on the line 2-2 of Fig. 1; and v,

Fig. 3 is a cross section on the line 3-3 of Fig. 1.

In the accompanying drawings, the numeral 1 denotes a barrel having any desired number of openings 2 alined transversely of the barrel. Disposed within the barrel 1, above and below the openings 2 are annular abutments 3 held in place by countersunk securing devices 4 of any desired sort. Packing rings 5 .coact with the abutments 3 and are engaged by retaining rings 6. U-

shaped compression members 7 extend into the barrel 1 through the openings 2 and are provided with broadened feet 8 which bear against the retaining rings 6, those portions of the barrel 1 which lie immediately above and below the openings 2 being received in the compression members. The compression members '7 are supplied, externally of the barrel 1 with outwardly projecting lugs 9. Screws 10 are oppositely threaded into the lugs 9 of the compression members and are supplied intermediate their ends with wrench heads 11 whereby the screws may be rotated.

Tubular pistons 12 work within the packing rings 5, there being any desired number of the pistons. The valves in the pistons may be variously constructed without jeopardizing the utility of the invention, but by way of illustration, the pistons 12 are shown as being provided at their lower ends with annular seats l i with which cooperate vertically moving valves 15. Spiders 17 are removably mounted in the upper ends of the pistons 12. A rod 18, preferably in the form of a tube, is connected with the spider of the upper piston, a rod 19 being mounted to slide in the member 18, the rod 19 being secured to the spider of the lower piston. The valve 15 in the present embodiment of the invention (which is not mandatory) is shown as being mounted to reciprocate vertically on the rod 19.

Suitable means (not shown) are provided whereby the pistons 12 operate simultaneously in opposite directions. When the lower piston moves downwardly, the valve 15 of the lower piston opens and admits the liquid. VJ hen the lower piston moves upwardly, the valve of the said piston closes, the upper piston moves downwardly, the valve in the upper piston opens, and the liquid is received in the upper piston. Then the lower piston moves downwardly to receive a fresh charge, the liquid in the upper piston and in the barrel thereabove is raised, in a way which will be understood readily by those skilled in the art when Fig. 1 is examined. By

rotating the screws 10, the compressionv members 7 may be forced apart, thus caus-' ing the retaining rings 6 to compress the packing rings against the abutments 3, the packing rings being forced, in this way, to engage the pistons 12 closely. The operation above alluded to can be carried out from a point exterior to the barrel 1.

The cylinder and the pistons are so constructed that the packings of the pistons may be adjusted from the exterior of the barrel without removing any working parts. The construction shown is well adapted for use in pumping gritty water and under all conditions wherein the packing is subjected to severe usage. The pistons are so arranged that an unusually long stroke is possible, the device being adapted to be used in deep installations, in mines and elsewhere. The cylinder occupies, practically, no more space than does a cylinder of ordinary construction. The pistons 12 may be raised to the openings 2, for the purpose of examination, to permit the removalof lodged obstructions, and to facilitate the adjustment or re placing of the valves. The weight of the water column is made effective to control the valves, and springs are unnecessary. The

by the screws 10, it will be obvious that the compression members'and the screws form a structure which will adjust itself vertically. vand produce an even and distributed pres- 35.

sure on the packing rings 5 which are disposed above and below the openings 2.

Having thus described the invention, what is claimed is 1. Ina pump, a barrel having openings; abutments in the barrel above and below the openings; packings cooperating with the abutments; compression members extended through the openings and coacting with the packings; means assembled with the com- -openings; packings cooperating with the;

abutments; compression members extended through the openings and coacting with the packings; screws disposed exteriorly of the barrel and right-and-left-hand-threaded into the compression members; and a piston mounted to reciprocate in the packings.

3. In a pump, a barrel having openings; abutments in the barrel above and below the openings; packings coioperating with the abutments; U-shaped compression members extended through the openings and slidably mounted on the barrel at the upper and lower edges of the openings, the compression members coacting with the packings; and adjustable connections uniting the compression members exteriorly of the barrel.

4. In a pump, a barrel having openings; abutments in the barrel above and below the openings; packings coacting with the abutments; retaining rings engaging the packings; U-shaped compression members extended through the openings and engaging the retaining rings, the compression members being slidably mounted on the barrel at the upper and lower edges of the openings; and screws located exteriorly of the barrel, the screws being right-and-lefthand-threaded into the compression members.

In testimony that I claim the foregoing as my, own, I have hereto afiixed my signature in the presence of two witnesses.

. MARION S. PARSONS.

Witnesses:

(JrUY A. Roos, Gno. R. TAAFFE. 

